:root {
  --bg: #0b0f17;
  --bg2: #101624;
  --card: #161e30;
  --border: #263452;
  --text: #e8edf7;
  --muted: #93a1c0;
  --accent: #38bdf8;
  --accent2: #818cf8;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container { max-width: 1060px; margin: 0 auto; padding: 0 22px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: Consolas, Menlo, monospace; font-size: 0.9em;
  background: var(--bg2); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 6px; white-space: nowrap;
}

/* hero */
.hero {
  background:
    radial-gradient(900px 420px at 75% -60px, rgba(56, 189, 248, 0.16), transparent),
    radial-gradient(700px 380px at 20% -80px, rgba(129, 140, 248, 0.14), transparent),
    var(--bg2);
  border-bottom: 1px solid var(--border);
  padding-bottom: 64px;
}

.nav { display: flex; align-items: center; justify-content: space-between; padding-top: 20px; padding-bottom: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 20px; letter-spacing: 0.3px; }
.brand img { border-radius: 8px; }
.brand b { color: var(--accent); }
.brand.small { font-size: 16px; }
.nav-links { display: flex; gap: 22px; font-size: 14.5px; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.hero-inner { padding-top: 56px; text-align: center; }
h1 { font-size: clamp(30px, 5.2vw, 52px); line-height: 1.15; letter-spacing: -0.5px; }
.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sub { max-width: 640px; margin: 18px auto 30px; color: var(--muted); font-size: 17px; }

.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 11px 22px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  font-weight: 600; font-size: 15px;
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn.primary { background: linear-gradient(135deg, #0ea5e9, #6366f1); border: none; }
.btn.primary:hover { filter: brightness(1.12); }
.btn.big { padding: 14px 30px; font-size: 16.5px; }
.btn.ghost { background: transparent; }

.tiny { color: var(--muted); font-size: 12.5px; margin-top: 14px; }
.dl-row { display: flex; gap: 10px; justify-content: center; margin-top: 12px; flex-wrap: wrap; }
.chip {
  font-size: 13px; padding: 6px 14px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg); color: var(--muted);
}
.chip:hover { color: var(--text); border-color: var(--accent); text-decoration: none; }

/* sections */
section { padding: 64px 0 8px; }
h2 { font-size: 28px; margin-bottom: 26px; text-align: center; letter-spacing: -0.3px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 22px;
}
.card .ico { font-size: 26px; margin-bottom: 10px; }
.card h3 { font-size: 16.5px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14px; }

.callout {
  margin-top: 22px; padding: 16px 20px; border-radius: 12px; font-size: 15px;
  background: rgba(56, 189, 248, 0.07); border: 1px solid rgba(56, 189, 248, 0.3); color: #bae6fd;
}

/* screenshots */
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.shots img {
  width: 100%; border-radius: 12px; border: 1px solid var(--border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}
.shots figcaption { text-align: center; color: var(--muted); font-size: 13px; margin-top: 8px; }

/* steps */
.steps { max-width: 760px; margin: 0 auto; list-style: none; counter-reset: step; }
.steps li {
  counter-increment: step; position: relative; padding: 14px 0 14px 58px;
  border-bottom: 1px solid rgba(38, 52, 82, 0.5); font-size: 15px;
}
.steps li::before {
  content: counter(step); position: absolute; left: 6px; top: 14px;
  width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0ea5e9, #6366f1); font-weight: 700; font-size: 15px;
}
.hint { display: block; color: var(--muted); font-size: 13px; margin-top: 4px; }

/* faq */
#faq details {
  max-width: 760px; margin: 0 auto 10px; background: var(--card);
  border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px;
}
#faq summary { cursor: pointer; font-weight: 600; font-size: 15px; }
#faq details p { color: var(--muted); font-size: 14px; margin-top: 10px; }

/* footer */
footer { border-top: 1px solid var(--border); margin-top: 70px; background: var(--bg2); }
.foot { padding: 30px 22px 40px; text-align: center; }
.foot .brand { justify-content: center; margin-bottom: 12px; }
.foot-links { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; font-size: 14px; margin-bottom: 14px; }
.foot .tiny { max-width: 640px; margin: 0 auto; }

@media (max-width: 620px) {
  .nav-links { gap: 14px; font-size: 13px; }
  section { padding-top: 46px; }
}